Record envelope, standing records and threshold days for Chino Valley (USC00021654), Arizona, United States, with 79 years of record.
Key Facts for Chino Valley
Chino Valley (USC00021654) is a weather station in Arizona, United States at 34.76 latitude and -112.46 longitude, 1,448 m (4,750 ft) above sea level.
The station reports from 1941 to 2019, 79 years of record.
1,464 records set at Chino Valley still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Chino Valley set a daily record high minimum temperature of 15.0 C (59.0 F) on 29 September 2019.
About the Station
Location: Arizona, United States, 34.76 latitude, -112.46 longitude.
Elevation: 1,448 m (4,750 ft).
Period of record: 1941 to 2019, 79 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Chino Valley. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Chino Valley, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-26.1 C (-15.0 F)
n/a
n/a
Feb
26.7 C (80.1 F)
-25.0 C (-13.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-17.8 C (0.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-12.8 C (9.0 F)
n/a
n/a
May
37.8 C (100.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
42.8 C (109.0 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
41.7 C (107.1 F)
3.3 C (37.9 F)
n/a
n/a
Aug
40.6 C (105.1 F)
1.7 C (35.1 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
36.1 C (97.0 F)
-15.0 C (5.0 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-18.3 C (-0.9 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-22.8 C (-9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Chino Valley still stand. 1949 holds the most, with 71.
Standing records at Chino Valley by the year they were set
Year set
Standing records
1942
12
1943
32
1944
40
1945
32
1946
23
1947
20
1948
24
1949
71
1950
43
1951
22
1952
17
1953
30
1954
16
1955
32
1956
26
1957
23
1958
22
1959
24
1960
24
1961
15
1962
20
1963
18
1964
18
1965
25
1966
11
1967
27
1968
15
1969
16
1970
15
1971
38
1972
27
1973
15
1974
14
1975
18
1976
11
1977
14
1978
18
1979
11
1980
26
1981
12
1982
16
1983
10
1984
17
1985
11
1986
15
1987
11
1988
9
1989
14
1990
12
1991
6
1992
2
1993
9
1994
3
1995
12
1996
20
1997
12
1998
7
1999
12
2000
13
2001
7
2002
10
2003
14
2004
9
2005
10
2006
40
2007
23
2008
25
2009
13
2010
16
2011
16
2012
14
2013
24
2014
12
2015
12
2016
25
2017
25
2018
29
2019
12
All-Time Record Progression
5 new records
5 all-time records were set at Chino Valley between 8 June 1981 and 21 June 2016. Each dot is a new record.
When Chino Valley set new all-time records
Date
Kind
Detail
1981-06-08
Record high minimum temperature
Record high minimum temperature 22.2 C (72.0 F)
1987-02-24
Record daily snowfall
Record daily snowfall 44.5 cm (17.5 in)
2006-07-19
Record high minimum temperature
Record high minimum temperature 23.9 C (75.0 F)
2009-07-09
Record high minimum temperature
Record high minimum temperature 25.0 C (77.0 F)
2016-06-21
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
Wettest Day of Each Month
Jul: 92.5 mm (3.6 in)
The wettest day on record for each calendar month at Chino Valley. The most was 92.5 mm (3.6 in) on 16 July 1953.
Record daily precipitation for each month at Chino Valley
Month
Record daily precipitation (mm)
Date
Jan
50.8 mm (2.0 in)
30 January 1980
Feb
46.2 mm (1.8 in)
26 February 1987
Mar
38.4 mm (1.5 in)
2 March 2015
Apr
35.8 mm (1.4 in)
22 April 1988
May
25.4 mm (1.0 in)
16 May 1993
Jun
45.0 mm (1.8 in)
13 June 1955
Jul
92.5 mm (3.6 in)
16 July 1953
Aug
58.9 mm (2.3 in)
21 August 1988
Sep
92.5 mm (3.6 in)
24 September 1983
Oct
53.3 mm (2.1 in)
23 October 2000
Nov
35.6 mm (1.4 in)
11 November 1978
Dec
31.8 mm (1.3 in)
2 December 1947
Period of Record Coverage
1942 to 2019
Complete yearUnder 90 percent of days
78 years of record at Chino Valley, 1942 to 2019. 32 years have data for under 90 percent of days and are left out of rankings: 1942, 1957, 1961, 1968, 1970, 1982, 1983, 1984 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Chino Valley, 1943 to 2018. Blue stripes are years cooler than the station's own mean of 13.0 C (55.4 F); red stripes are warmer. The coolest year was 1944, at 11.4 C (52.5 F), and the warmest was 2017, at 15.0 C (59.0 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Chino Valley as warming stripes, 1943 to 2018
Year
Annual mean temperature
Difference from the station mean
1943
13.0 C
+0.02 C
1944
11.4 C
-1.62 C
1945
11.8 C
-1.19 C
1946
12.4 C
-0.56 C
1947
12.7 C
-0.30 C
1949
11.8 C
-1.24 C
1950
13.2 C
+0.21 C
1951
12.4 C
-0.62 C
1953
12.0 C
-1.04 C
1954
13.0 C
-0.01 C
1955
12.0 C
-1.00 C
1956
12.4 C
-0.65 C
1959
12.4 C
-0.56 C
1960
12.2 C
-0.79 C
1962
12.6 C
-0.36 C
1963
13.0 C
-0.04 C
1964
12.2 C
-0.80 C
1965
12.7 C
-0.34 C
1966
13.2 C
+0.16 C
1967
12.4 C
-0.59 C
1969
13.2 C
+0.15 C
1971
11.7 C
-1.27 C
1972
12.7 C
-0.33 C
1973
12.1 C
-0.93 C
1974
12.7 C
-0.31 C
1975
12.1 C
-0.87 C
1976
12.9 C
-0.12 C
1977
13.4 C
+0.43 C
1978
13.2 C
+0.23 C
1979
12.4 C
-0.57 C
1980
13.1 C
+0.12 C
1981
14.1 C
+1.14 C
2005
13.6 C
+0.64 C
2006
14.0 C
+0.99 C
2007
14.3 C
+1.28 C
2008
14.1 C
+1.07 C
2012
13.9 C
+0.89 C
2013
13.3 C
+0.34 C
2014
14.6 C
+1.64 C
2015
14.3 C
+1.32 C
2016
14.5 C
+1.53 C
2017
15.0 C
+2.01 C
2018
14.8 C
+1.83 C
The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1943 to 2018. In Fahrenheit: 0.6 F (0.4 to 0.7) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Chino Valley
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.2 to 0.4) per decade
0.6 F (0.4 to 0.7) per decade
1943 to 2018
43
Rise
Mean daily maximum
0.10 C (0.00 to 0.20) per decade
0.18 F (0.01 to 0.35) per decade
1943 to 2018
43
Rise
Mean daily minimum
0.5 C (0.4 to 0.6) per decade
1.0 F (0.8 to 1.1) per decade
1943 to 2018
43
Rise
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1941 to 2019
Yearly extremes at Chino Valley: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
2016
38.9 C (102.0 F)
78
Coldest night (TNn)
-26.1 C (-15.0 F)
1949
-14.4 C (6.1 F)
78
Wettest day (Rx1day)
92.5 mm (3.6 in)
1953
32.0 mm (1.3 in)
79
Wettest five days (Rx5day)
135.4 mm (5.3 in)
1983
44.1 mm (1.7 in)
79
Longest dry spell (CDD)
126 days
1979
61 days
79
Hottest day (TXx)
The hottest day of the year at Chino Valley, 1941 to 2019. The record is 42.8 C (109.0 F) in 2016, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Chino Valley by year
Year
Hottest day (TXx)
1941
n/a
1942
39.4 C (102.9 F)
1943
39.4 C (102.9 F)
1944
38.3 C (100.9 F)
1945
38.3 C (100.9 F)
1946
38.3 C (100.9 F)
1947
38.9 C (102.0 F)
1948
39.4 C (102.9 F)
1949
39.4 C (102.9 F)
1950
41.7 C (107.1 F)
1951
39.4 C (102.9 F)
1952
37.8 C (100.0 F)
1953
39.4 C (102.9 F)
1954
39.4 C (102.9 F)
1955
39.4 C (102.9 F)
1956
40.0 C (104.0 F)
1957
42.2 C (108.0 F)
1958
40.6 C (105.1 F)
1959
40.0 C (104.0 F)
1960
40.0 C (104.0 F)
1961
40.0 C (104.0 F)
1962
38.3 C (100.9 F)
1963
38.9 C (102.0 F)
1964
38.9 C (102.0 F)
1965
40.0 C (104.0 F)
1966
36.7 C (98.1 F)
1967
38.9 C (102.0 F)
1968
38.3 C (100.9 F)
1969
38.9 C (102.0 F)
1970
40.0 C (104.0 F)
1971
40.0 C (104.0 F)
1972
40.0 C (104.0 F)
1973
39.4 C (102.9 F)
1974
38.9 C (102.0 F)
1975
37.8 C (100.0 F)
1976
37.8 C (100.0 F)
1977
39.4 C (102.9 F)
1978
38.9 C (102.0 F)
1979
38.3 C (100.9 F)
1980
37.8 C (100.0 F)
1981
38.9 C (102.0 F)
1982
37.2 C (99.0 F)
1983
38.9 C (102.0 F)
1984
40.0 C (104.0 F)
1985
39.4 C (102.9 F)
1986
37.2 C (99.0 F)
1987
37.2 C (99.0 F)
1988
38.3 C (100.9 F)
1989
39.4 C (102.9 F)
1990
38.9 C (102.0 F)
1991
37.8 C (100.0 F)
1992
36.7 C (98.1 F)
1993
38.3 C (100.9 F)
1994
39.4 C (102.9 F)
1995
40.6 C (105.1 F)
1996
39.4 C (102.9 F)
1997
39.4 C (102.9 F)
1998
35.6 C (96.1 F)
1999
36.7 C (98.1 F)
2000
38.9 C (102.0 F)
2001
38.3 C (100.9 F)
2002
38.9 C (102.0 F)
2003
41.7 C (107.1 F)
2004
38.3 C (100.9 F)
2005
40.0 C (104.0 F)
2006
38.9 C (102.0 F)
2007
40.6 C (105.1 F)
2008
37.8 C (100.0 F)
2009
38.9 C (102.0 F)
2010
38.3 C (100.9 F)
2011
37.2 C (99.0 F)
2012
39.4 C (102.9 F)
2013
41.1 C (106.0 F)
2014
38.3 C (100.9 F)
2015
38.9 C (102.0 F)
2016
42.8 C (109.0 F)
2017
42.2 C (108.0 F)
2018
39.4 C (102.9 F)
2019
38.3 C (100.9 F)
Coldest night (TNn)
The coldest night of the year at Chino Valley, 1941 to 2019. The record is -26.1 C (-15.0 F) in 1949, marked on the chart; the median year is -14.4 C (6.1 F).
Coldest night (TNn) at Chino Valley by year
Year
Coldest night (TNn)
1941
n/a
1942
-11.7 C (10.9 F)
1943
-15.0 C (5.0 F)
1944
-13.9 C (7.0 F)
1945
-22.8 C (-9.0 F)
1946
-14.4 C (6.1 F)
1947
-16.7 C (1.9 F)
1948
-15.6 C (3.9 F)
1949
-26.1 C (-15.0 F)
1950
-16.1 C (3.0 F)
1951
-17.8 C (0.0 F)
1952
-16.7 C (1.9 F)
1953
-16.7 C (1.9 F)
1954
-16.1 C (3.0 F)
1955
-15.0 C (5.0 F)
1956
-15.6 C (3.9 F)
1957
-16.7 C (1.9 F)
1958
-18.3 C (-0.9 F)
1959
-15.6 C (3.9 F)
1960
-19.4 C (-2.9 F)
1961
-18.3 C (-0.9 F)
1962
-20.0 C (-4.0 F)
1963
-18.9 C (-2.0 F)
1964
-17.2 C (1.0 F)
1965
-12.2 C (10.0 F)
1966
-18.9 C (-2.0 F)
1967
-20.6 C (-5.1 F)
1968
-22.2 C (-8.0 F)
1969
-13.3 C (8.1 F)
1970
-15.0 C (5.0 F)
1971
-20.0 C (-4.0 F)
1972
-16.1 C (3.0 F)
1973
-12.8 C (9.0 F)
1974
-13.9 C (7.0 F)
1975
-13.9 C (7.0 F)
1976
-13.3 C (8.1 F)
1977
-15.0 C (5.0 F)
1978
-22.8 C (-9.0 F)
1979
-17.2 C (1.0 F)
1980
-10.6 C (12.9 F)
1981
-11.1 C (12.0 F)
1982
-16.1 C (3.0 F)
1983
-14.4 C (6.1 F)
1984
-12.2 C (10.0 F)
1985
-13.3 C (8.1 F)
1986
-10.0 C (14.0 F)
1987
-16.1 C (3.0 F)
1988
-15.0 C (5.0 F)
1989
-14.4 C (6.1 F)
1990
-22.8 C (-9.0 F)
1991
-16.7 C (1.9 F)
1992
-10.6 C (12.9 F)
1993
-10.0 C (14.0 F)
1994
-11.7 C (10.9 F)
1995
-8.9 C (16.0 F)
1996
-14.4 C (6.1 F)
1997
-12.2 C (10.0 F)
1998
-11.1 C (12.0 F)
1999
-8.9 C (16.0 F)
2000
-11.7 C (10.9 F)
2001
-10.6 C (12.9 F)
2002
-12.2 C (10.0 F)
2003
-9.4 C (15.1 F)
2004
-10.0 C (14.0 F)
2005
-11.1 C (12.0 F)
2006
-12.2 C (10.0 F)
2007
-14.4 C (6.1 F)
2008
-10.6 C (12.9 F)
2009
-11.7 C (10.9 F)
2010
-10.0 C (14.0 F)
2011
-11.7 C (10.9 F)
2012
-9.4 C (15.1 F)
2013
-14.4 C (6.1 F)
2014
-10.0 C (14.0 F)
2015
-12.2 C (10.0 F)
2016
-10.6 C (12.9 F)
2017
-10.6 C (12.9 F)
2018
-11.1 C (12.0 F)
2019
-16.1 C (3.0 F)
Wettest day (Rx1day)
The wettest day of the year at Chino Valley, 1941 to 2019. The record is 92.5 mm (3.6 in) in 1953, marked on the chart; the median year is 32.0 mm (1.3 in).
Wettest day (Rx1day) at Chino Valley by year
Year
Wettest day (Rx1day)
1941
24.4 mm (1.0 in)
1942
50.3 mm (2.0 in)
1943
34.8 mm (1.4 in)
1944
16.5 mm (0.6 in)
1945
26.4 mm (1.0 in)
1946
28.7 mm (1.1 in)
1947
31.8 mm (1.3 in)
1948
32.3 mm (1.3 in)
1949
15.5 mm (0.6 in)
1950
33.8 mm (1.3 in)
1951
46.0 mm (1.8 in)
1952
32.3 mm (1.3 in)
1953
92.5 mm (3.6 in)
1954
22.6 mm (0.9 in)
1955
45.0 mm (1.8 in)
1956
23.1 mm (0.9 in)
1957
19.6 mm (0.8 in)
1958
33.0 mm (1.3 in)
1959
31.8 mm (1.3 in)
1960
21.3 mm (0.8 in)
1961
38.9 mm (1.5 in)
1962
25.9 mm (1.0 in)
1963
52.8 mm (2.1 in)
1964
23.9 mm (0.9 in)
1965
55.9 mm (2.2 in)
1966
21.6 mm (0.9 in)
1967
38.6 mm (1.5 in)
1968
32.0 mm (1.3 in)
1969
42.4 mm (1.7 in)
1970
35.3 mm (1.4 in)
1971
33.0 mm (1.3 in)
1972
46.7 mm (1.8 in)
1973
30.7 mm (1.2 in)
1974
58.7 mm (2.3 in)
1975
28.2 mm (1.1 in)
1976
23.4 mm (0.9 in)
1977
22.4 mm (0.9 in)
1978
35.6 mm (1.4 in)
1979
31.8 mm (1.3 in)
1980
50.8 mm (2.0 in)
1981
22.9 mm (0.9 in)
1982
23.4 mm (0.9 in)
1983
92.5 mm (3.6 in)
1984
33.5 mm (1.3 in)
1985
19.1 mm (0.8 in)
1986
20.1 mm (0.8 in)
1987
46.2 mm (1.8 in)
1988
58.9 mm (2.3 in)
1989
14.2 mm (0.6 in)
1990
61.0 mm (2.4 in)
1991
30.0 mm (1.2 in)
1992
24.1 mm (0.9 in)
1993
31.2 mm (1.2 in)
1994
45.2 mm (1.8 in)
1995
42.9 mm (1.7 in)
1996
22.9 mm (0.9 in)
1997
52.1 mm (2.1 in)
1998
49.5 mm (1.9 in)
1999
41.4 mm (1.6 in)
2000
53.3 mm (2.1 in)
2001
25.9 mm (1.0 in)
2002
39.6 mm (1.6 in)
2003
24.6 mm (1.0 in)
2004
40.6 mm (1.6 in)
2005
33.0 mm (1.3 in)
2006
26.7 mm (1.1 in)
2007
31.5 mm (1.2 in)
2008
42.7 mm (1.7 in)
2009
28.2 mm (1.1 in)
2010
38.1 mm (1.5 in)
2011
29.2 mm (1.1 in)
2012
26.7 mm (1.1 in)
2013
24.4 mm (1.0 in)
2014
46.7 mm (1.8 in)
2015
53.3 mm (2.1 in)
2016
40.6 mm (1.6 in)
2017
22.6 mm (0.9 in)
2018
28.7 mm (1.1 in)
2019
19.1 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Chino Valley, 1941 to 2019. The record is 135.4 mm (5.3 in) in 1983, marked on the chart; the median year is 44.1 mm (1.7 in).
Wettest five days (Rx5day) at Chino Valley by year
Year
Wettest five days (Rx5day)
1941
26.6 mm (1.0 in)
1942
54.3 mm (2.1 in)
1943
46.2 mm (1.8 in)
1944
28.8 mm (1.1 in)
1945
49.0 mm (1.9 in)
1946
63.5 mm (2.5 in)
1947
49.8 mm (2.0 in)
1948
72.7 mm (2.9 in)
1949
30.2 mm (1.2 in)
1950
54.9 mm (2.2 in)
1951
84.4 mm (3.3 in)
1952
51.6 mm (2.0 in)
1953
98.3 mm (3.9 in)
1954
43.4 mm (1.7 in)
1955
63.0 mm (2.5 in)
1956
26.2 mm (1.0 in)
1957
40.3 mm (1.6 in)
1958
37.6 mm (1.5 in)
1959
40.2 mm (1.6 in)
1960
30.5 mm (1.2 in)
1961
42.7 mm (1.7 in)
1962
37.8 mm (1.5 in)
1963
55.6 mm (2.2 in)
1964
41.3 mm (1.6 in)
1965
69.1 mm (2.7 in)
1966
49.6 mm (2.0 in)
1967
55.1 mm (2.2 in)
1968
53.1 mm (2.1 in)
1969
43.7 mm (1.7 in)
1970
65.8 mm (2.6 in)
1971
40.1 mm (1.6 in)
1972
91.4 mm (3.6 in)
1973
39.4 mm (1.6 in)
1974
61.7 mm (2.4 in)
1975
35.3 mm (1.4 in)
1976
42.2 mm (1.7 in)
1977
40.7 mm (1.6 in)
1978
81.1 mm (3.2 in)
1979
37.9 mm (1.5 in)
1980
58.9 mm (2.3 in)
1981
25.9 mm (1.0 in)
1982
44.1 mm (1.7 in)
1983
135.4 mm (5.3 in)
1984
47.5 mm (1.9 in)
1985
23.9 mm (0.9 in)
1986
41.0 mm (1.6 in)
1987
59.9 mm (2.4 in)
1988
84.1 mm (3.3 in)
1989
24.4 mm (1.0 in)
1990
80.0 mm (3.1 in)
1991
41.2 mm (1.6 in)
1992
37.4 mm (1.5 in)
1993
59.2 mm (2.3 in)
1994
72.9 mm (2.9 in)
1995
42.9 mm (1.7 in)
1996
27.5 mm (1.1 in)
1997
42.1 mm (1.7 in)
1998
30.2 mm (1.2 in)
1999
59.7 mm (2.4 in)
2000
61.7 mm (2.4 in)
2001
57.6 mm (2.3 in)
2002
59.0 mm (2.3 in)
2003
28.7 mm (1.1 in)
2004
40.6 mm (1.6 in)
2005
46.2 mm (1.8 in)
2006
33.8 mm (1.3 in)
2007
31.5 mm (1.2 in)
2008
52.4 mm (2.1 in)
2009
33.3 mm (1.3 in)
2010
38.1 mm (1.5 in)
2011
44.9 mm (1.8 in)
2012
39.4 mm (1.6 in)
2013
30.3 mm (1.2 in)
2014
94.1 mm (3.7 in)
2015
54.4 mm (2.1 in)
2016
44.2 mm (1.7 in)
2017
40.9 mm (1.6 in)
2018
52.8 mm (2.1 in)
2019
24.5 mm (1.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Chino Valley, 1941 to 2019. The record is 126 days in 1979, marked on the chart; the median year is 61 days.
Longest dry spell (CDD) at Chino Valley by year
Year
Longest dry spell (CDD)
1941
38 days
1942
81 days
1943
86 days
1944
50 days
1945
96 days
1946
67 days
1947
50 days
1948
46 days
1949
29 days
1950
60 days
1951
64 days
1952
35 days
1953
69 days
1954
36 days
1955
106 days
1956
64 days
1957
42 days
1958
45 days
1959
48 days
1960
44 days
1961
70 days
1962
78 days
1963
74 days
1964
50 days
1965
29 days
1966
105 days
1967
64 days
1968
51 days
1969
61 days
1970
52 days
1971
45 days
1972
102 days
1973
94 days
1974
96 days
1975
82 days
1976
68 days
1977
48 days
1978
68 days
1979
126 days
1980
47 days
1981
54 days
1982
23 days
1983
68 days
1984
72 days
1985
72 days
1986
58 days
1987
38 days
1988
52 days
1989
66 days
1990
48 days
1991
64 days
1992
53 days
1993
76 days
1994
50 days
1995
43 days
1996
91 days
1997
42 days
1998
40 days
1999
98 days
2000
59 days
2001
54 days
2002
85 days
2003
79 days
2004
101 days
2005
54 days
2006
82 days
2007
72 days
2008
59 days
2009
61 days
2010
80 days
2011
37 days
2012
67 days
2013
115 days
2014
66 days
2015
35 days
2016
34 days
2017
108 days
2018
44 days
2019
68 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
43 years with a frost
Across 43 years with a frost, the median last spring frost at Chino Valley falls on 12 May and the median first autumn frost on 13 October, which leaves a median of 156 days between them.
Fitted over all years, the growing season changes by +9.3 days per decade at this station.
Frost dates and growing season at Chino Valley
Measure
Median, all years
Earliest period
Recent period (1960 to 2018)
Recent against earliest
Fitted trend
Last spring frost
12 May
n/a
10 May
n/a
-5.6 days per decade
First autumn frost
13 October
n/a
20 October
n/a
+3.7 days per decade
Growing days
156 days
n/a
164 days
n/a
+9.3 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
55 years, 1942 to 2018
A day with at least 32.2 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 93.8 mm (3.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Chino Valley: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
32.2 mm (1.3 in)
5 years
45.5 mm (1.8 in)
10 years
55.4 mm (2.2 in)
25 years
69.5 mm (2.7 in)
50 years
81.1 mm (3.2 in)
100 years
93.8 mm (3.7 in)
Longer than the 55 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 55 years of values from 1942 to 2018.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 92.5 mm (3.6 in) in 1953; 92.5 mm (3.6 in) in 1983; 61.0 mm (2.4 in) in 1990.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Chino Valley standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chino Valley threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.